Edexcel IGCSE Biology Exam Technique Cheat Sheet 2026 (4BI1)
Every Edexcel IGCSE Biology command word decoded — what examiners actually want, the structure that earns full marks, the top mistakes flagged in real examiner reports, and the phrases that pick up the marks others leave on the table. Free printable PDF.
6 command words decoded
5 top mistakes flagged
Phrases that earn marks
Print-ready PDF
Command words — click to expand
Top tips for Biology
- 1Edexcel IGCSE uses 'describe / explain' interchangeably with Cambridge — same rules apply.
- 2For 6-mark questions, plan 6 distinct biological points before writing.
- 3Always name structures (alveoli, capillaries, glomerulus) rather than generic 'parts'.
- 4Required practicals: know IV/DV/control, method, source of error.
- 5Use 'because' / 'therefore' in every explain answer.
⚠️ Top mistakes examiners flag for Biology
- ✗Confusing osmosis and diffusion — osmosis is WATER through a partially-permeable membrane.
- ✗Writing 'parts of the cell' instead of named organelles.
- ✗Forgetting variables in practical questions.
- ✗Treating 'describe' as 'explain' — describe = what, explain = why.
- ✗Long continuous prose on 6-mark questions — examiners look for distinct points.
✅ Phrases that earn marks
- → …the substrate fits the active site (lock-and-key)
- → …water moves from a higher to a lower water potential by osmosis
- → …glucose is broken down in respiration to release energy as ATP
- → …the chemoreceptors detect the change
- → …by active transport, against the concentration gradient
❌ Phrases that lose marks
- ✗ Stuff moves through
- ✗ Things bind
- ✗ Cells make energy (say: cells release energy from glucose)
- ✗ Parts of the body
Extended answers are where the marks live in Biology
Edexcel IGCSE Biology 6-mark and extended-response questions are won or lost on STRUCTURE and command-word interpretation. A Tutopiya Biology specialist marks your mock answers like an examiner and shows you exactly which command words you're misreading. Submit a free enquiry to get matched.
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Edexcel IGCSE Biology exam technique — FAQ
What are the most important command words in Edexcel IGCSE Biology? ▼
Edexcel IGCSE Biology (4BI1) papers use 6 core command words. The most frequently misread are Name / State (where students add unnecessary explanation) and Explain (where students describe instead of reasoning with because/therefore). The full breakdown — what each word means, the answer structure, and the do/don't list — is in the interactive cheat sheet above.
What's the difference between "describe" and "explain" in Edexcel IGCSE Biology? ▼
Describe asks WHAT happens — quote values from data, state the trend, no reasoning. Explain asks WHY — every sentence must contain "because", "therefore" or "as a result". Mixing them up is one of the highest-frequency reasons Edexcel IGCSE Biology students lose marks they could have earned with the same content.
What are the top examiner-flagged mistakes for Edexcel IGCSE Biology? ▼
Across recent Edexcel IGCSE Biology examiner reports, the most-flagged mistakes are: Confusing osmosis and diffusion; Writing 'parts of the cell' instead of named organelles.; Forgetting variables in practical questions.. The full list with explanations is in the "Top mistakes" block in the cheat sheet above.
Can I print the Edexcel IGCSE Biology exam technique cheat sheet as a PDF? ▼
Yes — click the "Download Biology Cheat Sheet PDF" button above. Sign up free (no payment), and the printable A4 PDF downloads instantly. The PDF includes the command-word table, top tips, common mistakes and the earn/avoid phrase pairs — designed to fit on one page so you can pin it above your desk.
Will this cheat sheet help me get a top grade in Edexcel IGCSE Biology? ▼
The cheat sheet covers EXAM TECHNIQUE — how to read command words, structure answers, and use mark-scheme language. Combined with strong subject knowledge it can lift students by 1–2 grades by closing the gap on extended-response questions. Use the Edexcel IGCSE Biology Grade Predictor to see where you currently sit and how many marks you need for the next grade up.
Is this Edexcel IGCSE Biology cheat sheet free? ▼
Yes — fully free. Sign up takes 10 seconds (name + email) and unlocks the PDF download for this and every other Tutopiya study tool. We use the email to send occasional Edexcel IGCSE Biology revision resources and exam updates. Unsubscribe at any time.
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